Adjuster for deep-well sucker-rods.



PATENTED APR. 18, 1905.

E. GRAHAM. v ADJUSTER FOR- DEEP WELL SUOKER RODS.

APPLICATION FILED APE.12, 190-1.

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WITNESSES, 67/06 f fia a/h UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

EDWIN R. GRAHAM, OF BAKERSFIELD, CALIFORNIA, ASSIGNOR OF ONE- HALF TOI/VILLIAM M. GRAHAM, OF SANTA BARBARA, CALIFORNIA.

ADJUSTER FOR DEEP-WELL SUCKER-RODS.

SPECIFICATION forming part of Letters Patent No. 787,621, dated April18, 1905.

Application filed April 12, 1904. Serial No. 202,799.

To ctll'whom, it may concern:

Be it known that I, EDWIN R. GRAHAM, a citizen of the United States,residing at Bakersfield, in the county of Kern and State of California,have invented new and useful Improvements in Adjusters for Deep-VVellSucker- Rods, of which the following is a specification.

My invention relates to improvements in devices for connecting thesucker-rods of deepwell pumps with the walking-beam. Its object is toprovide a convenient and practical means for adjusting the pump-valveswithout the necessity of uncoupling the sucker-rods from thewalking-beam and then having to pull up or lower the rods by acumbersome mechanism of rope and tackle.

In oil and other deep wells it is necessary from time to time to effecta readjustment of the pump-valves according to the nature of thematerial being pumped or the amount of sand carried in suspension or forother causes. Various types of adjusters are in use; but they generallyemploy a form offrictiongrip on the exposed part of the sucker-rod, andtrouble from slippage is of frequent occurrence, since the sucker-rodmay be several hundred feet in length and very heavy.

My invention consists of the parts and the construction and combinationof parts, as hereinafter more fully described, having reference to theaccompanying drawings, in which Figure 1 is an elevation, partly insection, showing my invention. Fig. 2 is a continua tion of Fig. 1. Fig.3 is an elevation of stir rup.

A represents the tubing of a deep oil or Artesian well; 2, thesucker-rod; 3, the pumpbarrel; 4:, the lower stationary valve; 5, theupper valve; 6, the discharge-pipe at the surface; 7, the stufling-boxthrough which the polished rod 8 operates, and 9 the walking beamactuated from any suitable source of power and adapted to effect thereciprocation of the sucker rpd and valve 5. My invention includes astirrup 10, embracing and having a pivotal movement on the end of thebeam and terminating at the lower end in the form of a split nut 11,whose parts are adapted to be securely locked together by means of thebolts 12.

13 is a threaded rodengaging the nut portion 11 and having a swivelconnection 14 at its lower end with a short section 15, which connectswith the polished rod 8. The section 15 and swivel union are locked bymeans of a set-nut 16. The stirrup and rod 13 may be of any suitablelength. In practice the former is usually from seven to eight feet inlength and the latter about three feet. The rod 13 is provided with apolygonal surface 17 for the engagement of a wrench by which it may beturned to raise or lower the suckerrod in adjusting the distance betweenthe valves 4: 5. To turn rod 13, the bolts 12 are slackened up a little.After adjustment they are screwed down tight to clamp rod 13 and preventits turning. The use of the threaded engaging surfaces on rod 13 andpart 11 not only admits of any degree of adjustment, but when bolts 12are tightened absolutely prevents slippage, which, as before said, is asource of continual annoyance with the adjusters ordinarily in use. Ialso provide the section 15 with a polygonal surface 18 for theengagement of a wrench whereby the sucker-rod and upper valve may beturned, as is sometimes necessary in order to dislodge accumulations onthe pipe. The use of the swivel 14: permits this without in any waydisturbing the valve adjustment and avoids the necessity underconditions ordinarily in vogue of disconnecting from the walking-beamand suspending the sucker-rod from the hoisting-rope.

When it is necessary to withdraw the suckerrod from the well, thehoisting-rope is attached by a grab or other suitable means to the upperend of the rod 13, the bolts 12 removed, allowing the arms of thestirrup to open out, releasing the hold on the rod, and leaving theweight of the sucker-rod and attachments to be assumed by thehoisting-rope.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

Adevice of the character described having in combination aWalking-beam,a sucker-rod,

a pump-barrel, the upper and lower valves of a deep-well pump, a swivelunion connected to the sucker-rod, a threaded rod connected to theunion, and a yoke from which the threaded rod is suspended said yokeconsisting of a single piece of metal folded upon itself and with itsbight spread or open to receive and embrace the end of the walking-beam,and havingits side arms converging downwardly, and

I0 opposing clamp members on said arms and adapted to clamp the threadedrod, said yoke and clamp members consisting of a unitary structure,substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- 5 nesses.

EDWIN R. GRAHAM. Witnesses:

O. BIOKERDIKEQ Geo. FLoURNoY, Jr.

